Grazing incidence diffraction anomalous fine structure: a tool for investigating strain distribution and interdiffusion in InAs/InP quantum wires

When depositing by Molecular Beam Epitaxy a few InAs monolayers onto a (0 0 1) InP substrate, one can obtain an array of self-assembled wires at a nanometer scale. We have performed grazing incidence diffraction anomalous fine structure experiments on capped InAs/InP quantum wires (QWrs) to investigate their structural properties. Elastic strain relaxation has been simulated by the finite differences method.